حَدَّثَنَا أَبُو بَکْرِ بْنُ أَبِي شَيْبَةَ وَأَبُو کُرَيْبٍ قَالَ أَبُو بَکْرٍ حَدَّثَنَا وَکِيعٌ عَنْ عَلِيِّ بْنِ مُبَارَکٍ عَنْ يَحْيَی بْنِ أَبِي کَثِيرٍ عَنْ أَبِي سَلَمَةَ عَنْ أَبِي هُرَيْرَةَ رَضِيَ اللَّهُ عَنْهُ قَالَ قَالَ رَسُولُ اللَّهِ صَلَّی اللَّهُ عَلَيْهِ وَسَلَّمَ لَا تَقَدَّمُوا رَمَضَانَ بِصَوْمِ يَوْمٍ وَلَا يَوْمَيْنِ إِلَّا رَجُلٌ کَانَ يَصُومُ صَوْمًا فَلْيَصُمْهُ
صحیح مسلم · Hadith 2518
Abu Huraira (Allah be pleased with him) narrated that the Messenger of Allah (may peace he upon him) made a mention of the new moon and (in this connection) said: Observe fast when you see it (the new moon) and break fast when you see it (the new moon of Shawwal), but when (the actual position of the month is) concealed from you (on account of cloudy sky), then count thirty days.
Translated by Dr. Muhammad Muhsin Khan · Reviewed by Islamic University of Madinah · Published March 2020